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Objective Of A Data Warehouse
- Collect Data-Scrub, Integrate & Make It Accessible
- Provide Information – For Our Businesses
- Start Managing Knowledge
- So Our Business Partners Will Gain Wisdom!
Data Warehouse Definition
- A Data Warehouse is a Structured Repository of Historic Data.
- It is Developed in an Evolutionary Process by integrating data from Non-integrated legacy systems.
- A Data Warehouse is a repository of information collected from multiple sources, stored under a unified schema, and that usually resides at a single site.
- Data Warehouses are constructed via a process of DATA CLEANING, DATA INTEGRATION, DATA TRANSFORMATION, DATA LOADING, and PERIODIC DATA REFRESHING.
Definition of Data Mining
- It’s the process to extract or “mine” Knowledge from large sum of data.
Scenario:
Remember that the mining of gold from the rocks or sand is referred to as gold mining rather than rock or sand mining.
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